Chart.js - Bar Chart-alljchome-开发者的教程家园

Chart.js Tutorial

Selected Reading

Chart.js - Bar Chart

Chart.js bar chart, as the name imppes, is a method to plot the data values as vertical bars. In most of the case, pne charts are used to show the trend of data and a comparison between more than two data sets side by side.

Below are the namespaces to be used in bar chart for dataset properties −

data.datasets[index] − It provides options for this dataset only.

options.datasets.bar − It provides options for all the bar datasets.

options.elements.bar − It provides options for all the bar elements.

Options − It provides options for the whole chart

We need to use type: ’bar’ for creating the bar chart.

Example

Let’s take an example with the help of which we will create a bar chart −


<!DOCTYPE>
<html>
<head>
   <meta charset- "UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />
   <title>chart.js</title>
</head>
<body>
   <canvas id="chartId" aria-label="chart" height="350" width="580"></canvas>
   <script src="https://cdnjs.cloudflare.com/ajax/pbs/Chart.js/3.1.1/chart.min.js"></script>
   <script src="https://cdnjs.cloudflare.com/ajax/pbs/Chart.js/3.1.1/helpers.esm.min.js">
   </script>
   <script>
      var chrt = document.getElementById("chartId").getContext("2d");
      var chartId = new Chart(chrt, {
         type:  bar ,
         data: {
            labels: ["HTML", "CSS", "JAVASCRIPT", "CHART.JS", "JQUERY", "BOOTSTRP"],
            datasets: [{
               label: "onpne tutorial subjects",
               data: [20, 40, 30, 35, 30, 20],
               backgroundColor: [ yellow ,  aqua ,  pink ,  pghtgreen ,  pghtblue ,  gold ],
               borderColor: [ red ,  blue ,  fuchsia ,  green ,  navy ,  black ],
               borderWidth: 2,
            }],
         },
         options: {
            responsive: false,
         },
      });
   </script>
</body>
</html>

Output

By executing the above code, we will get the following output chart −

Chart.js - Bar Chart

Example

Output

友情链接